The point here is customers concerned about security, like the government. It's a good call to make the public aware of the feature for when these big customer

The point here is customers concerned about security, like the government. It's a good call to make the public aware of the feature for when these big customers are evaluating AWS. Yes, nobody with less than 50 servers will want to even think about this, but that's not who it's targeted at. Plus, anyone who cares about security to the extent of isolating VMs physically won't care too much about the cost.